CVE-2025-21495 Denial of service in MySQL Enterprise Firewall
A high-privileged attacker can cause a complete denial of service in MySQL Enterprise Firewall via network access.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-21495?
CVE-2025-21495 is a medium-severity denial of service vulnerability in Oracle Corporation MySQL Enterprise Firewall, published on 21 Jan 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Vulnerability in the MySQL Enterprise Firewall product of Oracle MySQL (component: Firewall). Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and 9.1.0 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Enterprise Firewall. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Enterprise Firewall. CVSS 3.1 Base Score 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-770
Which versions are affected by CVE-2025-21495?
It affects 1 product.
Products include Oracle Mysql Enterprise Firewall.
How do I fix CVE-2025-21495?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-21495 being exploited?
There is no known exploitation of CVE-2025-21495 in the wild and no public exploit code.
Sources
Also known as GHSA-w5jm-fc4v-fpwp.